I really think the key to developing a healthy and empowered “personal” relationship to power lies in the development of technologies which capture what I like to call “micro energy” sources and which this article refers to as “ambient energy” sources.  In this case the kinetic energy of cars in the parking lot in front of this UK grocery store are captured by “speed bumps” and used to power the cash registers!

http://www.mnn.com/earth-matters/energy/stories/british-supermarket-chain-powers-store-checkouts-with-modified-speed

Amazing!